WO2003064784A1

WO2003064784A1 - Building material and method of manufacturing the material

Info

Publication number: WO2003064784A1
Application number: PCT/JP2003/000793
Authority: WO
Inventors: Hideki Kobayashi; Tatsushi Nagae
Original assignee: Toto Ltd.
Priority date: 2002-01-28
Filing date: 2003-01-28
Publication date: 2003-08-07
Also published as: CN100564765C; HK1078329A1; CN1623025A; JP3671975B2; JPWO2003064784A1; US20050129913A1

Abstract

A building material capable of sustaining a sanitary condition for a long period by rapidly draying residual water remaining on the surfaces of the building material, comprising units having grooves of 0.5 to 3 mm or less in width and 0.5 to 2 mm in depth directed in multiple directions, and island-like slip preventing projected parts surrounded by the grooves and having the size of 5 x 5 mm to 25 to 25 mm, characterized in that the surfaces of the island-like slip preventing projected parts are formed in a flat or a curved shape.

Description

Building materials and manufacturing methods

TECHNICAL FIELD The present invention relates to a building material suitable for flooring in which water is easily accumulated in bathrooms, food factories, pools, public toilets, etc., and in which attention is paid to slippage. Background art

For example, in a food factory, the work is finished by rinsing with water or hot water for hygiene management, but on a coated floor made of epoxy resin or the like, the remaining water at that time accumulates, and it is not dried the next day, May slip. In addition, the remaining water tends to remain in the same place at all times, so that part becomes a hotbed of fungi and fungi, which may not be hygienic.

In addition, in the pool, water always pools on the poolside and slips easily occur in public toilets on the highway when washing. All of these are due to the build-up of water on the building surface during cleaning, which can result in large water droplets or long wet times. Building materials that consider drying acceleration and water drop prevention to solve these problems have not been developed so far.

As one method for solving the conventional problems, it is generally known to make the floor surface hydrophilic, reduce water droplets remaining on the surface, and promote drying. However, even with this method, under the conditions of actual use, organic substances and other contaminants adhere to the surface, and the oil contained in the stain loses the hydrophilic effect, resulting in the generation of residual water droplets. was there.

The present invention has been made in order to solve the above problems, and it is an object of the present invention to provide a building material capable of maintaining a sanitary state for a long time by quickly drying residual water remaining on the surface of the building material. It is in. Disclosure of the invention In the present invention, in order to solve the above problems, the groove width is 0.5 mm or more and 3 mm or less, the groove depth is 0.5 mm or more and 2 mm or less, and the direction of the groove is oriented in multiple directions. The enclosed island-shaped anti-slip projection is composed of a unit having a size of 5 mm X 5 mm or more and 25 mm X 25 mm or less, and the surface of the island-shaped anti-slip projection is flat or curved. Provide building materials that are characterized by:

With such a configuration of the building material, it is possible to provide a building material capable of quickly drying the remaining water remaining on the surface of the building material and maintaining a hygienic state for a long period of time. The reason is described below in detail.

When rinsing the surface, set the width and depth of the groove and adjust the direction of the groove so that water does not remain in the convex part and flows easily to the groove side, and the flow in the groove is slow. They were installed in multiple directions. In addition, island-shaped anti-slip projections were set to reduce water droplets remaining on the projections. Furthermore, the surface of the island-shaped anti-slip projection was made flat or curved so as not to feel pain when touching the floor with bare feet.

Due to the above-mentioned groove, the washed water flows slowly along the groove, and is eventually guided to the drain. In addition, the island-shaped protrusion prevents the groove from contacting the sole of the shoe or bare foot. Thereby, the groove is secured as a drain passage even in a wet state. In addition, since the water is reliably discharged from the grooves, a thin water film is not formed between the soles of the shoes or bare feet and the floor building material, which effectively prevents slippage.

In the present invention, the width of the groove on the surface of the building material is 0.5 mm or more and 3 mm or less, and the depth is 0.5 mm or more and 2 mm or less. If the width is less than 0.5 mm or the depth is more than 2 mm, it will be extremely difficult to machine the surface of the building material. If the width is 3 mm or more and the depth is 0.5 mm or less, the shoes and bare feet may be too wide to contact the bottom of the groove. If they do, the water flow will be cut off, which is not good for slippage.

Also, the direction of the groove has a multi-directional property that does not face one direction. If there is a tendency in one direction, the flow will be smooth and will be sent to the drain quickly, and it will be difficult for water to stay in the drain. Due to the grooves being cut in various directions, the flow of water becomes unstable and stays in the water channel, reducing the flow velocity. If water accumulates in the flow channel, the water in the convex portion is guided in the flow channel direction, and it is difficult for the water to accumulate on the surface of the convex portion.

In addition, the island-shaped convex portion surrounded by the groove is 5 111 111 5 111 111 or more and 2 5] 11111 25 111 111 or less. It consists of a unit. If it is less than 5 mm X 5 mm, it is too small and has the same area as the groove, and shoes and bare feet may touch the bottom of the groove. If they do, the water flow will be cut off, which is not good for slippage. In addition, from the data so far, the polka dots that can remain independently can be completely dried within 8 hours by natural drying. The result is 2 cc. The contact angle of water formed by 2 cc polka dots with building materials is generally about 30 to 60 degrees, and it becomes lower with highly hydrophilic materials. If the contact angle after metal stones are attached every day is set to 60 degrees, the diameter of the circle formed by 2 cc of water with the floor material will be about 25 mm, so the island shape The size of the projection is preferably 25 mm X 25 mm or less.

In addition, the surface of the island-shaped anti-slip projection is made flat or curved. By doing so, you will not feel pain when you touch the floor with bare feet.

Further, as the shape of one building material having a large number of grooves and a large number of island-shaped anti-slip projections on its surface, a shape having a high central portion and a low peripheral end may be used alone or in combination. it can. Here, the composite shape refers to, for example, a dome shape at the center and a step shape at the outside. In this way, water flows smoothly into the joint between the building materials.

In a preferred aspect of the present invention, the groove has substantially no water absorption. By doing so, grooves that are not directly in contact with bare feet or shoes will not always be in a water-retaining state, making it less likely to become a hotbed of fungi and fungi, and a more hygienic condition.

In a preferred aspect of the present invention, the groove contains an antibacterial agent. By doing so, the grooves that are not directly contacted by bare feet or shoes are not always in a water-retaining state, so that it is difficult for them to become a hotbed of fungi and fungi, and a more hygienic condition is obtained. In a preferred embodiment of the present invention, the size of the building material is equal to or greater than 10 O mm x 10 O mm and equal to or less than 90 O mm X 18 O O mm.

If it is less than 100 mm x 100 mm, the workability will be poor. If it is more than 90 mm x 180 mm, it will be necessary to handle the building material itself and cut it during construction.

In a preferred embodiment of the present invention, any one of a trapezoidal shape, a semicircular shape, a U-shape, a V-shape, and the like may be used. The area should be large. By doing so, the cleaning property of the groove is reduced. In a preferred embodiment of the present invention, the building material having a high moisture drying rate is an inorganic ceramic material such as a tile, a porcelain plate, or a glass; an organic material having an inorganic material coated on its surface; or an oxide or a composite oxide thereof. Organic-inorganic composite material containing 50% or more of an inorganic filler composed of

In the first place, inorganic substances are less likely to leave water droplets because of their lower contact angle with water than other materials. Even for organic materials, if the surface is covered with an inorganic coating material or mixed with inorganic silica particles, the hydrophilicity is much higher than that of an organic-only substrate, and the surface has water. Can be imparted.

Inorganic materials that can be coated on the surface include Si02, A1203, Zr〇2, Fe2O3, CaO, MgO, K2〇, Na20, Ti〇2, Zn〇, Sn〇2. It is preferable to use a material having a photocatalytic function, a material having antibacterial properties such as Ag and Cu, and / or a composite material thereof. If possible, these coating materials should be processed by focusing on the groove. Materials with photocatalytic function such as Ti02, ZnO, Sn〇2, etc., antibacterial materials such as Ag and Cu, and / or their composite materials can assist the surface hydrophilicity by photocatalytic effect, Is more preferable because it can provide

Inorganic fillers added to organic materials include Si〇2, A1203, Zr〇2, Fe2〇3, CaO, Mg〇, K2〇, Na20 and Ti〇2, ZnO, It is preferable to use a material having a photocatalytic function such as S ηθ 2, a material having antibacterial properties such as Ag and Cu, and / or a composite material thereof. Materials having a photocatalytic function such as Ti02, ZnO, and Sn 、 2, materials having antibacterial properties such as Ag and Cu, and / or a composite material thereof can assist the surface hydrophilicity by a photocatalytic effect, It is more preferable because it can impart antibacterial properties.

In a preferred embodiment of the present invention, a method for producing ordinary tiles can be applied as the production method.

In the pressure molding method, a convex part is provided in the mold on the surface side of the finished tile so that a groove is formed in the molded body, and the molded body of the tile with a groove on the surface is formed by pressure molding be able to. The finished molded product is glazed as necessary and fired. By doing so, the desired building material can be obtained.

Also, grooves can be formed later by irradiating a weak laser beam in a pattern after pressing into a flat plate. As a method of forming grooves later, a method of directly shaving with a grindstone or a method of sandblasting can be used.

In a preferred embodiment of the present invention, as a production method, it can be produced by extruding a flat plate and then pressing an uneven plate having a pattern formed on the surface thereof. It is also possible to use a method in which a groove having a pattern of grooves is formed on a tile base extruded into a flat plate, and a plate is pressed to form grooves on a soft base. The base material with the grooves formed is dried, glazed if necessary, and fired to complete the desired building material.

In a preferred embodiment of the present invention, a method for forming a groove by injection molding in a mold in which the groove is formed can be used as a manufacturing method. This method is used especially for resin products.

In a preferred aspect of the present invention, it is effective as a manufacturing method to coat a water-repellent material in advance on the surface of the convex portion of the building material in which the groove is formed. By keeping the grooves hydrophilic and the surface water-repellent, water on the surface quickly collects in the grooves, which has the effect of accelerating the drying and draining of the floor. As the water-repellent coating material, a silicone-based material is easy to use, but a fluorine-based material can also be used. BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is a plan view of a building material according to the present invention.

FIG. 2 is an enlarged plan view of a building material according to the present invention.

FIG. 3 is an enlarged perspective view of a building material according to the present invention before water is applied.

FIG. 4 is an enlarged perspective view after water is applied to the building material according to the present invention.

FIG. 5 is a diagram showing one embodiment of a building material according to the present invention. '

FIG. 6 is a view showing another embodiment of the building material according to the present invention.

FIG. 7 is a diagram showing another embodiment of the building material according to the present invention.

FIGS. 8 (a) to (c) are diagrams showing another embodiment of the building material according to the present invention. 9 (a) to 9 (c) are diagrams showing another embodiment of the building material according to the present invention. BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, the construction material of the present invention whose surface moisture dries quickly will be described in more detail. Fig. 1 is a plan view of a building material according to the present invention whose surface is quickly dried, Fig. 2 is an enlarged plan view of the building material, and Figs. 3 and 4 are enlarged perspective views before and after applying water to the building material. Figures 5 to 7 are various pattern diagrams.

As shown in Fig. 1, the arrangement of building materials is graded toward the drain for drainage. The construction material is constructed so that the water on the building material flows along the drainage gradient and collects in the drain. In addition, joints are cut for each building material unit, and water is also installed along the slope from that joint.

The shape of the shape is not limited to a specific shape, as shown in FIG. 4, as long as water does not accumulate on the island-shaped protrusions. Various patterns such as a square as shown in Fig. 6, a hexagon as shown in Fig. 7, or a trapezoid, a diamond, a circle, a perfect circle, and a triangle are possible.

Furthermore, the cross-sectional shape of the building material is high at the center and has a downward slope toward the periphery, specifically, the dome shape shown in Fig. 8 (a), the step shape shown in Fig. 8 (b), (c) 9), and the edges of the building material can be chamfered as shown in FIGS. 9 (a) to 9 (c).

As shown in Fig. 2 and Fig. 3, grooves are formed on the surface of the building material.Pressing is performed by pressing, and a method of digging grooves in the pressed green body is described below. It can be formed by various methods such as extrusion molding in a plastic state, and molding by pressing a mold, injection molding, injection molding and the like. At this time, considering the removal from the mold, when viewed from above, the shape of the groove is easier if the upper part has a larger area than the lower part.

If the molded material is ceramic such as tile, the surface can be glazed if necessary. At this time, if the thickness of the glaze is increased, the glaze may get inside the formed groove and fill the groove after firing, so the thickness of the glaze is preferably 0.4 mm or less.

Construction materials can be suitably used as long as they are inorganic materials such as tiles, porcelain plates, glass, and cement. Wear. Of course, tiles and ceramic plates may or may not have glaze.

Various organic materials such as FRP, acrylic, vinyl chloride, and phenolic resin can be used as the organic material coated with the inorganic material.

Inorganic fillers that are combined with organic materials include S i 02, A 1 203, Z rO 2, F e 2〇3, CaO, MgO, K20, Na 2 T, T i〇2, Zn〇 A material having a photocatalytic function such as Sn〇2, a material having antibacterial properties including Ag and Cu and / or a composite material thereof can be used, but powder is preferable, and the particle shape is spherical, acicular or prismatic. , Cubic, chain, etc.

To paint on ceramic using this transfer paper, separate the backing paper 1 with water, attach the transfer paper from which the backing paper 1 has been separated to the surface of the ceramic, dry it, and dry at 150 to 250 ° C. It may be cured in an atmosphere. By doing so, a ceramic having a desired pattern can be obtained.

(Example 11)

A 30 OmmX 30 Omm ceramic glazed tile with a square unit pattern 2 OmmX 2 Omm, groove width 2 mm, groove depth lmm, and a V-shaped groove formed on the surface was fabricated. Pressure molding was used for the production. A method was used in which the mold was provided with a convex part that could form a groove in the molded body, pressed to form a molded body, and after hardening, a glaze was applied over it and firing was performed at 1,200 ° C for 40 minutes. . This was installed on the floor at an inclination of about 5 degrees, and the surface was sprayed with water. The water spread over the new tile glaze (the new one was more hydrophilic and had a water contact angle of about 20 degrees) and flowed along the grooves. The thin and water-like film remained on the island-shaped protrusions, but air-dried one hour later. This was exposed to the bathroom floor for one month. The island-shaped projections had a metal lithography attached to them, impairing hydrophilicity. The contact angle of water was about 60 degrees. Water was sprinkled in the same way as when it was new, but when water was trapped in the grooves, water droplets on the surface were gradually absorbed by the grooves, and eventually did not remain on the island-shaped protrusions. In addition, the surface was almost dried when confirmed after 8 hours of natural drying.

(Example 1-2)

Square unit pattern on the surface 2 OmmX 2 Omm, groove width 2 mm, groove depth lmm, V-shaped groove formed 30 OmmX 30 Omm glazed tile Was prepared. A wet extrusion molding method was used for fabrication. A grooved pattern was formed by pressing a metal roll with a groove pattern on the tile substrate formed into a flat plate by extrusion. A method was used in which the molded body was dried, tightened, glazed with glaze from above, and fired at 1200 ° C. for 60 minutes. This was installed on the floor at an inclination of about 5 degrees, and the surface was sprayed with water. The water spread over the new tile glaze (the new one was more hydrophilic and had a water contact angle of about 20 degrees) and flowed along the grooves. The thin and water-like film remained on the island-shaped protrusions, but air-dried one hour later. This was exposed to the bathroom floor for one month. The island-shaped projections had metal stones attached thereto, impairing hydrophilicity. The contact angle of water was about 60 degrees. Water was sprinkled in the same way as when it was new, but when water was trapped in the grooves, water droplets on the surface were gradually absorbed by the grooves, and eventually did not remain on the island-shaped protrusions. In addition, the surface was almost dried when confirmed after 8 hours of natural drying.

(Example 13)

A square unit pattern 2 O mm X 20 mm, groove width 2 mm, groove depth l mm, V-shaped groove formed 30 O mm X 30 O mm porcelain glazed tile on the surface Produced. Pressure molding was used for the production. A groove was dug by irradiating a weak laser beam of about 1/4 of the energy for cutting the tile on the compact pressed to a flat plate, and the surface was cleaned to obtain a compact. A method was used in which glaze was applied from above and baked at 1280 ° C for 60 minutes. A silicone-based water-repellent material (boron C) was applied to the finished tiles only on the protrusions using a flat roll. This was installed on the floor at an inclination of about 5 degrees, and the surface was sprayed with water. The convex portion had a water contact angle of 100 degrees because of water repellency. The water rolled over the water-repellent material applied to the tiles and gathered and flowed so as to converge in the grooves. No water remained on the island-shaped protrusions. This was exposed to the bathroom floor for one month. The island-shaped protrusions had metal stones 付着 adhered thereto, and the water repellency was slightly impaired. The water contact angle was about 70 degrees. Water was applied in the same way as when the product was new, but when water was collected in the grooves, the water droplets on the surface were gradually absorbed by the grooves, and eventually did not remain on the island-shaped protrusions. In addition, the surface was almost dried when it was confirmed 8 hours after natural drying.

(Example 2-1)

Square unit pattern on the surface 1 O mm X 5 mm, groove width 1.5 mm, groove A 0.5 mm deep, 30 mm × 300 mm FRP resin with a V-shaped groove was prepared. The groove was formed by injection molding in a mold in which the groove was formed. This is heated to about 6 ο, and an aqueous solution of a mixture of 0.2% alkali silicate (lithium silicate 35, manufactured by Nippon Chemical Co., Ltd.), 0.1% titanium oxide sol, and 0.001% silver nitrate is sprayed onto the surface and grooves. Coated. After drying again at 60 ° C for 2 minutes, an inorganic thin film was deposited on the FRP. This was installed on the floor at an inclination of about 3 degrees, and water was applied to the surface. The water spread over it and flowed along the ditch. Water and thin film remained on the island-shaped protrusions, but they dried naturally after 1 hour. This was exposed to the bathroom floor for two months. The island-shaped projections had metal stones attached thereto, impairing hydrophilicity. The water contact angle was about 50 degrees. Water was applied in the same way as when the product was new, but when water was collected in the grooves, the water droplets on the surface were gradually absorbed by the grooves, and eventually did not remain on the island-shaped protrusions. In addition, the surface was almost dry when confirmed after 2 hours of natural drying. In addition, the surface was lightly cleaned and then watered in the same manner to remove deposited metal stones and other contaminants. After about an hour, the surface air-dried. In addition, no mold or slimming was observed due to the effects of titanium oxide and silver ions.

(Example 2-2)

A 30 OmmX 30 Omm FRP resin with a square unit pattern 1 OmmX 5 mm, groove width 1.5 mm, groove depth 5 mm, and V-shaped groove formed on the surface was prepared. The groove was formed by injection molding in a mold in which the groove was formed. This was heated to about 60 ° C, and sprayed with an aqueous solution of a mixture of 0.2% alkali silicate (Nippon Chemical Co., Ltd. lithium silicate 35) 0.2%, titanium oxide sol 0.1%, and silver nitrate 0.001%. The groove was coated. After drying at 60 ° C for 2 minutes, an inorganic thin film was deposited on the FRP. Further, a silicone-based water-repellent material was applied to only the projections by a roll from above. It was dried again to obtain a floor material. This was installed on the floor at an inclination of about 3 degrees, and water was applied to the surface. The water rolled over it and gathered in the ditch to flow. No water remained on the island-shaped protrusions. This was exposed to the bathroom floor for two months. The island-shaped convex portions had metal stones attached thereto, and the water repellency was slightly impaired. The water contact angle was about 80 degrees. Water was applied in the same way as when the product was new, but when water was collected in the grooves, water droplets on the surface were gradually absorbed by the grooves, and eventually did not remain on the island-shaped protrusions. Also at 2pm After a short while, the surface was almost dry. In addition, the surface was lightly cleaned, and then sprinkled with water in the same manner.

After 1 hour, the surface air dried. No mold or slimming was observed due to the effects of titanium oxide and silver ions.

(Example 3)

A 30 OmmX 30 Omm silica 50% acrylic resin with a square unit pattern 1 OmmX 5 mm, groove width 1.5 mm, groove depth 5 mm, V-shaped groove formed on the surface was prepared. This was installed on the floor at an inclination of about 10 degrees, and water was sprayed on the surface. The water spread over it and flowed along the ditch. Water was initially formed on the island-shaped protrusions and water remained, but the water was gradually guided into the grooves and air-dried two hours later. This was exposed to the bathroom floor for one month. Water-repellent stains, such as metal stones, adhered to the island-shaped protrusions, impairing hydrophilicity. The contact angle of water was about 65 degrees. Water was applied in the same way as when the product was new, but when water remained in the grooves, water droplets on the surface were gradually absorbed by the grooves, and eventually did not remain on the island-shaped protrusions. The surface was almost dry when it was confirmed 2 hours after natural drying. When the surface was lightly washed and watered in the same manner, dirt such as deposited metal stones was removed, and the surface air-dried about an hour later.

(Example 4)

A 30 OmmX 30 Omm FRP resin with a square unit pattern 1 OmmX 5 mm, groove width 1.5 mm, groove depth 5 mm, and V-shaped groove formed on the surface was prepared. A 0.2% aqueous solution of a mixture of an alkali silicate (lithium silicate 35, manufactured by Nippon Chemical Co., Ltd.), 0.1% of titanium oxide sol, and 0.001% of silver nitrate was coated by a flow coat. After that, the coating material remaining on the island-shaped protrusions on the surface was wiped off, leaving the coating material only in the grooves. This was dried at 60 ° C for 5 minutes, and an inorganic thin film was deposited on the FRP groove. This was installed on the floor at an inclination of about 3 degrees, and water was applied to the surface. Water repelled over the FRP and flowed along the ditch. Almost no water remained on the island-shaped protrusions. This was exposed to the bathroom floor for two months. The island-shaped protrusions were not hydrophilic due to the adhesion of metal stones 、, but after watering, the water droplets on the surface were quickly absorbed by the grooves and did not remain on the island-shaped protrusions . 2 hours for natural drying Later, the surface was almost dry.

(Example 5)

Porcelain with a U-shaped groove with a square unit pattern of 5 mm X 5 mm, a groove width of 2 mm, and a groove depth of lmm on the surface (15 OmmX 15 Omm) with a downward slope where the center is high and the peripheral edge is the lowest. Quality unglazed tiles were produced. This was placed on a flat floor and water was sprayed on its surface. Water spread and flowed along the grooves on the tiles. Water remained in a thin film on the island-shaped protrusions, but air dried after 4 hours.

(Example 6)

A U-shaped groove with a square unit pattern of 5 mm x 5 mm, a groove width of 2 mm and a groove depth of lmm is formed on a downward slope (15 OmmX 15 Omm) where the center is high and the peripheral edge is the lowest. A porcelain unglazed tile was produced. In addition, chamfering (gradient processing different from the tile body) was applied to the end of the porcelain unglazed tile. This was installed on a floor with no slope and water was applied to the surface. Water spread over the tiles along the grooves. Water remained in a thin film on the island-shaped protrusions, but dried naturally after 2.5 hours.

(Example 7)

Porcelain with a U-shaped groove with a square unit pattern of 5 mm X 5 mm, a groove width of 2 mm, and a groove depth of lmm on the surface (15 OmmX 15 Omm) with a downward slope where the center is high and the peripheral edge is the lowest. Quality unglazed tiles were produced. Furthermore, chamfering (gradient processing different from that of the tile body) was performed in two steps on the end of the porcelain unglazed tile. This was installed on a floor with no slope and water was applied to the surface. Water spread and flowed along the grooves on the tiles. Water remained in a thin film on the island-shaped protrusions, but dried naturally after 2 hours. Industrial applicability

ADVANTAGE OF THE INVENTION According to this invention, the remaining water which remains on the surface of a building material dries quickly, and the building material which can maintain a sanitary state for a long term can be provided.

Claims

The scope of the claims

1. The groove width is 0.5 mm or more and 3 mm or less, the groove depth is 0.5 mm or more and 2 mm or less, and the direction of the groove is multi-directional. A building material comprising a unit having a size of 5 mmX 5 mm or more and 25 mmX25 mm or less, wherein the surface of the island-shaped anti-slip projection is flat or curved.

2. The surface of the building material on which the grooves and the island-shaped anti-slip projections are formed is tapered, stepped, dome-shaped, bell-shaped, etc. The building material according to claim 1, wherein the building material has a single shape or a composite shape.

3. The building material according to claim 1, wherein the groove has substantially no water absorption.

4. The building material according to claim 1, wherein an antimicrobial agent is compounded in the groove.

5. The building material according to claim 1, wherein a size of the building material including the unit is 10 OmmX 100 mm or more and 900 mmX 1800 mm or less.

6. The building material according to any one of claims 1 to 5, wherein the shape of the groove is such that an upper portion has a larger area than a lower portion when viewed from above.

7. The building materials contain 50% of inorganic ceramic materials such as tiles, porcelain plates, glass, etc., organic materials with inorganic materials coated on the surface, or inorganic fillers composed of oxides or their composite oxides. The building material according to any one of claims 1 to 6, wherein the building material is an organic-inorganic composite material containing the above.

8. The inorganic material to be coated on the surface according to claim 7 includes Si 請求 2, A1203, 0) 2, Fe203, CaO, MgO, K20, Na2O, A building material characterized by being a material having a photocatalytic function such as Ti 02, ZnO, or Sn〇2, a material having antibacterial properties such as Ag or Cu, and / or a composite material thereof.

9. The inorganic filler according to claim 7, wherein S i〇2, A 1203, Z Materials having photocatalytic function such as r02, Fe2〇3, CaO, Mg〇, K20, Na2〇, Ti〇2, ZnO, SnO2, and materials having antibacterial properties such as Ag and Cu and / or A building material characterized by being composed of a composite material.

10. The method for manufacturing a building material according to claim 1, wherein the unevenness of the building material according to claims 1 to 9 is produced by pressure molding.

1 1. A method for manufacturing a building material, characterized in that at the time of pressure molding according to claim 10, a projection is provided on the surface of the mold so that a groove is formed in the molded body.

12. The method for manufacturing a building material according to claim 1, wherein the unevenness of the building material according to any one of claims 1 to 9 is formed by digging a groove in a predetermined pattern after being pressed into a flat surface.

13. A method for manufacturing a building material, wherein the pattern groove according to claim 12 is manufactured using a grindstone, a laser beam, or a sand blast.

14. The unevenness of the building material according to claims 1 to 9 is characterized in that the unevenness is formed by extruding a plate into a flat shape and then pressing an uneven plate having a pattern formed on the surface thereof. Manufacturing method of building materials.

15. The method for manufacturing a building material according to claim 1, wherein the unevenness of the building material according to claims 1 to 9 is produced by injection molding in a mold having a groove pattern.

16. A method for producing a building material, characterized in that a water-repellent coating is applied in advance to a convex portion of the building material produced by the production method according to claims 10 to 15.